Side wall burner arrangement



April 10, 1962 w. c. HENSEL SIDE WALL BURNER ARRANGEMENT Filed May 27,1960 Figure 2 Figure 3 //V VE/V TOR- Wo/Ier 0. Hense/ ATTORNEYS UnitedStates Patent 3,028,907 SlDE WALL BU 'ER ARRANGEMENT Walter C, Hensei,Palatine, IlL, assignor to Universal Oil Products Company, Des Plaines,Ill., a corporation of Delaware Filed May 27, 1M0, Ser. No. 32,461 4Qlaims. (Cl. 1581) The present invention relates to an improved designand construction for a burner supporting arrangement in combination witha heating chamber, and more particularly, for supporting and positioninga burner in the side wall of a heater for upward firing along the insideportion of the wall in a manner providing high temperature radiantheating to the central zone of the heating chamber.

Usual heater designs and constructions which provide radiant heatingfrom a side Wall, or from a center wall, install a series of spacedburners along the floor of the heater in a position to direct the flameand hot gases upwardly over the inside face of the wall. Floorinstallations, however, require that the heating chamber be raised abovea foundation in order to install the burners and fuel lines below theheating chamber floor so that as a result, there is a more complex andexpensive construction.

It is an object of the present invention to provide an improved andefficiently operating side wall burner arrangement such that the burnermay direct flame against the inside wall of the heater.

It is a further object of the invention to provide a construction andarrangement for installing a burner through the side wall of the heaterin a manner providing easily controlled adjustability of the burnerposition and the adjustability of a plurality of secondary air streamswhich are directed to the zone of the burner head or nozzle.

Briefly, the improved burner arrangement of the present invention forinstallation in the side wall of a heating chamber and for verticalfiring, embodies in combination, an open-topped refractory block memberhaving a closed end adapted for positioning within the heating chamberand having an opposing end provided with air inlet ports, a horizontallypositioned dividing member spaced from the top, bottom and the closedend of the block member providing thereby an upper air channel, a lowerair chan nel and an end air channel, at least one air inlet port withinsaid inlet port end of the block member communicating with each of theupper and lower air channels within the block member, and meanssupporting and positioning a burner head within the block memberpermitting the burner to direct flame through the upper top of the blockmember.

Preferred embodiments of the burner arrangement incorporate adjustablemeansfor controlling the air flow through the various air channelsentering the block member and surrounding the burner head for directingvertical firing upwardly against the inside face of the wall of theheating chamber.

The improved design and construction of the burner arrangement, as wellas advantages gained by providing a side wall installation, will be moreapparent upon reference to the accompanying drawing and the followingdescription thereof.

FIGURE 1 of the drawing is a sectional elevational view through aportion of a side wall of a heating chamber illustrating one embodimentof a side Wall burner arrangement.

FIGURE 2 of the drawing is a diagrammatic isometric view of a pre-castburner block member.

FIGURE 3 of the drawing is a sectional view through the block member andthe burner arrangement, as indicated by the line 3-3 in FIGURE 1 of thedrawing.

3,928,907 Fatented Apr. 10, 1962 FIGURE 4 of the drawing indicates anelevational view of one embodiment of an air regulating plate or damperwhich may be used to control the flow of air through the burnerarrangement.

In FIGURE 1 of the drawing there is shown diagrammatically a refractorywall '1 of a heating chamber having a suitable outside casing plate orcovering *2. Supported within the wall 1 is an open-topped and openendedblock member 3 which has a closed end projecting inwardly from theinterior face of wall 1 a short distance such that there is a small openarea or gap between the upper end portion 4 of block 3 and the insideface of wall 1, whereby to permit space for the upward projection offlame and hot gases from a burner head 5 positioned within the blockmember 3.

Since the burner block 3 has a portion projecting inside of the heatingchamber, it is preferably formed of a high temperature-resistantmaterial such as a cast refractory of the type customarily used forburner blocks and for wall tile that are used as liners for hightemperature furnaces and heaters, etc. In FIGURE 2 of the drawing thereis shown an isometric view of one form of the burner block 3, such asmay be formed from a suitable castable refractory material. It will benoted that this particular embodiment has an open outer end portion,such that when the block is mounted in the side wall 1 of the heatingchamber its end will be flush with the outside of the casing plate 2whereby air inlet means may be provided exteriorly of the heatingchamber. It may also be noted that the present embodiment has ledges orshoulder portions 6 extending longitudinally at mid height of theinterior of the block member so as to support a horizontally positioneddivider member 7. The divider member '7, shown in both PlGURES l and 3,may also be made of a suitable temperature-resistant castable material,as indicated in the drawing, however, suitable alloy metal or otherheat-resistant materials may well be used for this horizontalpartitioning and supporting member.

It will be noted that the divider member '7 is efiective to support theburner head 5 and the fuel supply line 8 thereto, as well as effect thedivision of the interior of the burner block 3 into an upper air channel9, a lower air channel it and an end air channel or space 11 whichextends vertically around the interior end of divider end 7 and aroundthe burner head 5. The portion of refractory wall 1 extending across theopen-topped portion of the burner block 3 serves to provide the topenclosure for the air channel 9, while leaving an open space between theinterior face of wall 1 and the upper lip portion 4 of the block 3.Thus, when the burner is in operation it will be seen that the secondaryair may be passed through channel 9 and flow along the front edge of theburner head 5 while air through the lower channel 10 and the end channel11 will flow around and back of the back of the burner head 5 in thespace provided between the interior end of the divider 7 and the insideof the end wall portion of block 3. It is, of course, a feature of thepresent invention to provide a burner arrangement which is adapted tohaving the burner extend through a side wall portion of a heatingchamber and to having a burner nozzle that fires vertically upwardlyalong the inside face of the heating chamber, thus, the burner head 5,as indicated diagrammatically in the present drawing, shows outlet portsfor gas or atomized fuel along only the upper edge of the head. Thepresent head or nozzle is shaped as a quadrant, or as part of a circularsection, however, it is not intended to limit the present invention tothe use of a burner which has any particular type of shape or design atthe outlet head. Other fan-shaped heads may be designed and used whichprovide the desired effect of distributing the ho-L fiames and gasesgenerally upwardly over the inside surface of wall 1.

As is best shown in FIGURE 1 of the drawing, a front or outside framemember 12 is placed over and attached to the casing plate 2 in front ofthe open front end section of the burner block 3. The frame 12 isprovided with upper and lower air inlet ports 13 and 4, with the upperinlet port 13 aligning with and communicating with the upper air channel9 and the lower inlet port i4 aligning with and communicating with thelower air inlet channel 10. The upper portion of frame 12 is providedwith a pair of projecting rods 15 which extend outwardly from the faceof the frame at the edges of the air inlet port 23, Also, to lowerportion of the frame is provided with a pair of outward plate projectingrods 15 which extend from the face of the frame member 12 at each sideof the lower air inlet port 14. The two pairs of rods 15 and 16 areutilized to support, respectively, air inlet regulating plates ordampers 17 and 18. As better shown in FIGURE 4 of the drawing, each ofthe air regulator plates 17 and 18 have an elongated shape with theirouter end provided with holes 19 that are adapted to fit over and slideon the respective pairs of supporting bars 15 and 16. In operation, theplates 17 and 18 may be manually adjusted to regulate the quantity ofair being admitted through the respective ports 13 and 14 by means oftheir positioning, or spacing away from the front end of the frame 12.In other words, by varying the distance in front of the frame 12 thereis a variation in the resulting quantity of air which may be admittedinto a particular opening. In order to maintain a desired adjustment ofeach of the air regulator plates 17 and 1%, suitable thumbscrews 20 maybe provided through tapped holes in bosses 21 to in turn permiteffecting a clamping on the respective pairs of rods 15 and 16. Each ofthe plates 17 and 18 are also provided with a notched opening to provideclearances for, respectively, the pipe 8 and the rod 24.

A further modification of the preferred construction of the presentburner arrangement may be provided by having a plurality of holes orpassageways 22 extend through the side and bottom portions of the burnerblock 3. The holes 22 should be positioned generally in alignment withthe end air channel 11 and below the burner head 5 such that when theburner is in operation there will be caused an aspirating effect whichwill draw hot gases from within the interior of the heating chamber. Thepulling of hot gases through the openings 22 from alongside of and belowthe burner block 3 will, of course, cause a certain amount ofrecirculation of hot corn :ustion gases within the heating chamber. Itmay be pointed out that when there is eflected the burning of atomizedheavy oil fuels the hot gases from holes 22 will be aspirated tointermix with the cold air from outside the heater, thus giving a heatedair stream to assist in the vaporization of the fuel from the burnerhead. Adjustable control of hot gas recirculation, through the holes 22,may be maintained by the use of a suitable sliding member 23 which restson the interior bottom portion of the block 3 and is adapted to slideback and forth over the inside apertures of the passageways 22 throughthe burner block 3. As is best shown in FIGURE 3 of the drawing, thesliding plate member 23 may be of a channel shape or U-shaped so that itmay simultaneously cover over holes 22 and through the lower side wallportion of the burner block. The movement and adjustment of the member23 may be controlled exteriorly of the furnace chamber by means of anextension rod 24. Rod 24, as shown in Fl'GURE l of the drawing, ispositioned along the inside of the portion of the burner block 3 andextends through the frame 12 and the lower edge of the air regulatorplate 18 so that the outside end thereof may be reached manually for aback and forth adjustment to cover, or partially cover the gasrecirculation passageways 22.

Minor modifications may be made in the design and construction of thepresent burner arrangement and still lie within the scope of the presentinvention, for example, it is obvious that more than one damper or airregulating plate may be utilized to adjust quantities of air passing tothe upper and lower air channels 9 and 10 respectively, rather than useone sliding plate at each zone. Also, the removable divider plate 7 maybe supported horizontally within the burner block 3 by suitable groovesor notches, rather than by the use of ledges or shoulders 6.Alternatively, the divider plate 7 may be permanently attached withinthe burner block by suitable attachment means, or still further, may beformed by suitable coring so as to comprise an integral portion of theblock itself. In still another modification, more than one burner heador more than one fuel supply line may be inserted into and supported bya single block member and by one setting, particularly by utilizing ablock member 3 having a suitable width and by coordinating the flamedistribution from adjacent burner nozzles so as to give the desiredupward flow of heat and flame. Also, the burner head and piping theretomay be varied to accommodate the type of fuel being burned. When burningoils, a suitable steam inlet line may be incorporated along with meansfor effecting the desired atomization of the fuel stream at the burneroutlet.

The present description has been directed toward upward firing along aheater wall, however, similar burner arrangements may well be utilizedalong horizontal surfaces, as for example, along the top or floorportion of an oven or other high temperature heating chamber.

I claim as my invention:

1. In combination with a side wall of a heating chamher, an open-toppedhollow refractory block member supported in an opening in the heatingchamber wall and having a closed end extending a short distance beyondthe inside face of the wall of said heating chamber and an opposing airinlet end, a horizontal dividing member spaced from the top, bottom andclosed end portions of said block member providing thereby, a lower airchannel and an end air channel, said dividing member and the uppersurface of said opening in the chamber wall forming an upper air channelin the block member, an air inlet port frame connecting with said airinlet end of said block member and having spaced air inlet portsextending therethrough, an air inlet port in said air inlet framepositioned in alignment with the upper air channel within said blockmember and a lower air inlet port through said frame in alignment withsaid lower air channel within said block member, movable air regulatingmembers supported from said air inlet frame and positioned in front ofsaid air inlet ports to respectively control the upper and lower airchannels, and a fuel supply line and a burner head within said blockmember and supported on said dividing member, the burner head beingpositioned in said end air channel to emit flame upwardly through aportion of the open top of said block member and along the side wall ofthe heating chamber.

2. The apparatus of claim 1 further characterized in that saidrefractory block member has spaced holes therethrough in the bottom andside wall portions thereof adjacent the closed end whereby gas flow maypass through said holes and upwardly through the zone of the end airchannel between the end of said horizontal dividing member and theclosed end of said block member.

3. The apparatus of claim 2 still further characterized in that amovable plate member is positioned within said block member adjacent theholes therethrough, and ad justment means connects with and extends fromsaid movable plate to the air inlet frame end of said block memberwhereby said movable plate may be moved back and forth over said holesand adjust gas flow therethrough.

4. In combination with a side wall of a heating chamber, an open-toppedhollow refractory block member supported in an opening in the heatingchamber wall and having a closed end extending a short distance beyondthe inside face of the wall of said heating chamber and an opposing airinlet end, a horizontal dividing member spaced from the top, bottom andclosed end portions of said block member providing thereby a lower airchannel and an end air channel, said dividing member and the uppersurface of said opening in the chamber wall forming an upper air channelin the block member, means for introducing air to said upper and lowerair channels to pass from said air inlet end of the block memberto saidend air channel, and a fuel supply line and a burner head within saidblock member and supported 011 said dividing member, the burner headbeing positioned in 6 said end air channel to emit flame upwardlythrough a portion of the open top of said block member and along theside wall of the heating chamber.

References Cited in the file of this patent UNITED STATES PATENTS1,114,994 Landry Oct. 27, 1914 2,096,555 Mettler Oct. 19, 1937 2,255,617Hoak Sept. 9, 1941 2,308,902 Weller Jan. 19, 1943 2,659,424 FergusonNov. 17, 1953

